Well mine come from My name 'Danny' and then Kill was my nickname in primary school. ( long story ) and then 600 is just a number i seem to remember and my name is never used up on any sites so it stuck

Well, the first part is obviously from one of my favorite puzzle games, PuyoPuyo (or Puyo Pop, or Puyo Fever, etc., whichever you prefer). It used to be PuyoBean, since my nickname from my family was Bean for a long time. But outgrowing that, I changed it to Dead. Reason for that being, I've always had a thing with the dead, so to speak. I love horror movies/zombie flicks, Halloween is my favorite holiday, games like L4D and Painkiller, and even things like autopsies, real crime shows, and options for after-death across the world. Y'know, viking funerals, graveyards, creamation, the body farm, cadaver use, things of that sort.

R2 - my name (R***** R*****)
2D - my avatar used to be a 2D sketch of Yoshi.
DJ - I listened to a lot of Rage and Tom Morello songs when I changed to this username. His music style reminds me of a "DJ's"R**J - my nick...

my username has quite the history behind it, i use to play something called storms of time, and another player gave me a character named Crudus, and then i took that name, and played phantasyrpg. at this time i didnt have an email address so i used someone elses to sign up with the username crudus, then after months n months of playing my password was like stuck on that password, so i had the staff change my pass for me and sent it to the email it was registered under, n i couldnt contact the guy that i signed up under, so i made a new character with the name DarkCrudus and stuck with it